Real Avid Bore-Max Speed Brush 375 Cal. Carbon build-up not only affects performance and accuracy but also causes degradation of the bore. Carbon build-up also insulates the copper fouling in the bore making it difficult to dissolve and remove with bore solvent. Using a bore brush to remove this carbon build-up is the best way to tackle the job. In order to achieve maximum effectiveness there needs to be an optimal balance between bristle density and bristle flexibility. Having too few bristles is a waste of time and too many wont provide enough flexibility to navigate the lands and grooves of the bore. The bristle configuration of the Bore-Max Speed Brush provides maximum scrubbing density removing more carbon with each pass and getting maximum results faster. Specifications for Real Avid Bore-Max Speed Brush: Manufacturer: Real Avid Fabric/Material: Nickel Phosphor Quantity: 6 Features of Real Avid Bore-Max Speed Brush Speeds up the bore cleaning process to maximize accuracy and performance of the firearm Twice the bristle density of standard brushes delivers maximum scrubbing power with each bore pass Efficiently loosening layers of baked-on carbon Optimal balance between bristle density and flexibility to successfully reach into lands and grooves Caliber-specific precision fit to ensure snug fit in the bore Nickel plated bristles wont react or break down from solvents and last longer than traditional brushes Vigorous scrubbing with bore-max speed brush prior to injecting foaming bore solvent into the bore will break away outer layers of baked on carbon and will expose copper build-up so it can be Chemically dissolved Use bore-max speed jag and speed patches to wipe the bore clean after brushing and applying bore-max bore foam solvent Package Contents: Real Avid Bore-Max Speed Brush Real Avid AVBMSB375: Bore-Max Speed Brush 375 Cal